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Diffstat (limited to 'doc/filters.texi')
-rw-r--r-- | doc/filters.texi | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/doc/filters.texi b/doc/filters.texi index e1b0534..249d882 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -5187,6 +5187,30 @@ input reaches end of stream. This will cause problems if your encoding pipeline drops frames. If you're trying to apply an image as an overlay to a video stream, consider the @var{overlay} filter instead. +@section amplify + +Amplify differences between current pixel and pixels of adjacent frames in +same pixel location. + +This filter accepts the following options: + +@table @option +@item radius +Set frame radius. Default is 2. Allowed range is from 1 to 63. +For example radius of 3 will instruct filter to calculate average of 7 frames. + +@item factor +Set factor to amplify difference. Default is 2. Allowed range is from 0 to 65535. + +@item threshold +Set threshold for difference amplification. Any differrence greater or equal to +this value will not alter source pixel. Default is 10. +Allowed range is from 0 to 65535. + +@item planes +Set which planes to filter. Default is all. Allowed range is from 0 to 15. +@end table + @section ass Same as the @ref{subtitles} filter, except that it doesn't require libavcodec |